<?php
 class Model_Stats {
     
     protected $countryList = array();
     
     public function AddCountry($country) {
         if (array_key_exists($country, $this->countryList)) {
             $this->countryList['country']++;
         } else {
             $this->countryList['country'] = 1;
         }
     }
     
     public function getCountries() {
         return array_keys($this->countryList);
     }
 }